Emergency auxiliary wrench for pneumatic ball valve

Abstract

The utility model relates to the technical field of valve operation auxiliary tools, and discloses a pneumatic ball valve emergency auxiliary wrench which is characterized in that a handle assembly is movably connected with a connecting locking assembly through a connecting trigger assembly, a sliding piece is fixedly arranged on the lower portion of a wrench head, and the lower side of the sliding piece is in threaded connection with the connecting locking assembly; the connecting and locking assembly comprises a spring lock pin, a guide sleeve and an unlocking shifting piece, and the spring lock pin is arranged at the connecting part of the handle assembly and the trigger assembly; the thrust transmission mechanism comprises a push rod and a reset spring, one end of the push rod is arranged in one side of the handle assembly, the other end of the push rod can be inserted into an unlocking shifting piece of the connecting and locking assembly, and the outer surface of the guide sleeve is fixedly installed in a handle assembly body. And the spring lock pin is matched with the thrust transmission mechanism, so that the locking state of the handle assembly and the wrench head is relieved.

Description

Technical Field

[0001] This utility model relates to the field of valve operation auxiliary tools, and in particular to an emergency auxiliary wrench for a pneumatic ball valve. Background Technology

[0002] Pneumatic ball valves are key equipment in the refueling system, used frequently and in large quantities. In the refueling system, due to long-term contact with propellant, ball valves may become inflexible in opening and closing. Especially in winter, when the ambient temperature is below the freezing point of the propellant, ice will form around the valve seat inside the ball valve, which greatly increases the torque required to open and close the ball valve, causing the ball valve to fail to open normally. In this case, the operator needs to use an emergency auxiliary wrench to assist in opening the valve.

[0003] Existing emergency auxiliary wrenches have several problems in use. First, when installed on the cylinder lever, they are prone to jamming during cylinder opening. When the ball valve opens suddenly and rapidly, the auxiliary wrench may detach, potentially damaging surrounding pipelines or equipment and posing a risk of injury to the operator. Second, while open-end automatic return wrenches on the market can meet the emergency opening needs of some small-sized cylinders (such as DN25 cylinders), their short automatic return stroke makes them unsuitable for emergency opening operations of ball valve cylinders larger than DN25. Furthermore, their mechanical structure cannot allow for quick wrench removal in special circumstances. Third, existing ball valve auxiliary wrenches are simple in design and require precise installation. If installed incorrectly, the wrench handle may jam against the ball valve's feedback device, causing equipment damage. Meanwhile, during operation, the operator must stand in the opposite direction of the opening direction and is strictly prohibited from standing within the radius of the opening direction to prevent the ball valve from suddenly opening and causing the wrench to turn, which could injure the operator. This places extremely high demands on the operator's operating procedures and increases the operational risk.

[0004] Therefore, there is an urgent need for a stable, reliable, and fault-tolerant pneumatic ball valve emergency auxiliary wrench to solve the problems existing in the above-mentioned technologies. Utility Model Content

[0005] To address the shortcomings of existing emergency auxiliary wrenches, this utility model provides a pneumatic ball valve emergency auxiliary wrench, which has the advantages of improving the safety and convenience of emergency opening operation of pneumatic ball valves and solves the aforementioned problems.

[0006] This utility model provides the following technical solution:

[0007] An emergency auxiliary wrench for a pneumatic ball valve includes a handle assembly, a wrench head, a trigger assembly, and a connection locking assembly. The handle assembly and the connection locking assembly are movably connected via the connection trigger assembly, allowing the handle assembly to be quickly connected and disconnected from wrench heads of different sizes. A sliding member is fixedly provided at the lower part of the wrench head, and the lower side of the sliding member is threadedly connected to the connection locking assembly. The connection locking assembly includes a spring locking pin, a guide sleeve, and an unlocking lever. The spring locking pin is located at the connection point between the handle assembly and the trigger assembly.

[0008] The handle assembly includes a handle body and a force transmission mechanism disposed inside the handle body. The force transmission mechanism includes a push rod and a return spring. One end of the push rod is disposed inside one side of the handle assembly, and the other end can be inserted into the unlocking paddle of the locking assembly. After the ball lock on the unlocking paddle extends, the handle assembly is locked to the wrench head. The outer surface of the guide sleeve is fixedly installed inside the handle assembly body to guide the spring lock pin and ensure its linear movement.

[0009] Preferably, the handle body of the handle assembly adopts an ergonomic design, which makes it easy for the operator to grip and apply torque. When the operator rotates forward, the push rod will apply force to the spring locking pin. The return spring is sleeved on the push rod and is used to reset the push rod after the push force is removed.

[0010] Preferably, the trigger assembly includes a hinge plate, a slot structure, and a T-shaped locking block. The hinge plate is hinged to the side of the handle assembly, and the other side of the hinge plate is fixedly installed between the handle assembly and the wrench head by a pivot pin. The T-shaped locking block is inserted into the slot structure to fix the handle assembly and the wrench head together.

[0011] Preferably, the wrench head is internally rotatably connected to a roller, one end of which is fixedly connected to a connection locking assembly.

[0012] Preferably, a limiting bracket is fixedly provided on the outer side of the unlocking lever, and one side of the limiting bracket is engaged with the side of the connecting locking component.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In this utility model, the cooperation between the spring locking pin and the thrust transmission mechanism effectively prevents the wrench from getting stuck on the ball valve cylinder bracket due to incorrect wrench direction. Simultaneously, when the ball valve cylinder suddenly opens, the wrench automatically unlocks and disengages, preventing damage to surrounding equipment or injury to operators caused by the wrench rotating with the ball valve, greatly improving safety during operation.

[0015] 2. In this utility model, the trigger assembly and various specifications of wrench heads are quickly connected and separated through hinge plates and T-shaped blocks, making the emergency auxiliary wrench applicable to pneumatic ball valve cylinders of different specifications, meeting the emergency handling needs of various pneumatic ball valves in the filling system, and expanding the applicability of the wrench. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the operation of the emergency wrench currently used at the launch site.

[0017] Figure 2 This is a schematic diagram of the overall structure of the pneumatic ball valve emergency auxiliary wrench of this utility model;

[0018] Figure 3 This is a schematic diagram of the handle assembly on the emergency auxiliary wrench of the pneumatic ball valve of this utility model.

[0019] Figure 4 This is a schematic diagram of the unlocking lever on the emergency auxiliary wrench of the pneumatic ball valve of this utility model.

[0020] Figure 5 This is a schematic diagram of the disassembled connection and locking components on the emergency auxiliary wrench of the pneumatic ball valve of this utility model.

[0021] In the diagram: 1. Handle assembly; 101. Push rod; 102. Return spring; 2. Wrench head; 3. Connecting and locking assembly; 301. Spring locking pin; 302. Guide sleeve; 303. Unlocking lever; 4. Trigger assembly; 401. Hinge piece; 402. Slot structure; 403. T-shaped block; 5. Sliding component; 6. Roller; 7. Limiting bracket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5An emergency auxiliary wrench for a pneumatic ball valve is disclosed. A handle assembly 1 and a connecting locking assembly 3 are movably connected via a connecting trigger assembly 4, allowing for quick connection and separation of the handle assembly 1 with wrench heads 2 of different specifications. A sliding member 5 is fixedly installed at the lower part of the wrench head 2, and the lower side of the sliding member 5 is threadedly connected to the connecting locking assembly 3. The connecting locking assembly 3 includes a spring locking pin 301, a guide sleeve 302, and an unlocking paddle 303. The spring locking pin 301 is located at the connection point between the handle assembly 1 and the trigger assembly 4. The handle assembly 1 includes a handle body and a thrust transmission mechanism disposed inside the handle body. The thrust transmission mechanism includes a push rod. 101 and return spring 102, push rod 101 is set inside one side of the handle assembly 1 and the other end can be inserted into the unlocking paddle 303 of the connecting locking assembly 3, so that the ball lock on the unlocking paddle 303 extends to realize the locking connection between the handle assembly 1 and the wrench head 2. The outer surface of the guide sleeve 302 is fixedly installed inside the main body of the handle assembly 1 to guide the spring lock pin 301 to ensure its linear movement. When it is necessary to separate the handle assembly 1 from the connecting locking assembly 3, the operator moves the spring lock pin 301 to drive the spring lock pin 301 back, thereby releasing the locking state between the handle assembly 1 and the wrench head 2.

[0024] The handle body of the handle assembly 1 adopts an ergonomic design, which makes it easy for the operator to apply torque force after gripping it. When the operator rotates it in the forward direction, the push rod 101 will apply force to the spring locking pin 301. The reset spring 102 is sleeved on the push rod 101 and is used to reset the push rod 101 after the push force is removed.

[0025] The trigger assembly 4 includes a hinge plate 401, a slot structure 402, and a T-shaped locking block 403. The trigger assembly 4 is designed with various models according to different specifications of pneumatic ball valve cylinder force transmission rods. The hinge plate 401 is hinged to the side of the handle assembly 1. The other side of the hinge plate 401 is fixedly installed between the handle assembly 1 and the wrench head 2 by a shaft pin. The T-shaped locking block 403 is inserted into the slot structure 402 for fixed installation between the handle assembly 1 and the wrench head 2. The T-shaped locking block 403 is used to engage with the pneumatic ball valve cylinder force transmission rod to realize the connection between the wrench and the ball valve cylinder.

[0026] The wrench head 2 is internally connected to a roller 6, one end of which is fixedly connected to the connecting locking component 3; a limit bracket 7 is fixedly installed on the outside of the unlocking lever 303, one side of the limit bracket 7 is engaged with one side of the connecting locking component 3; the clamping cylinder is fixed by the tooth groove of the sliding member 5 connected by the thread of the connecting locking component 3. The spring locking pin 301 is an existing product, which locks the position of the wrench head 2 by popping out or retracting after being squeezed.

[0027] Working principle:

[0028] When assistance is needed to open the pneumatic ball valve, engage the appropriate wrench head 2 with the cylinder transmission rod, then grasp the handle assembly 1 and apply a pushing force to the push rod 101 by displacing the cam angle outside the handle assembly 1. Under the action of the pushing force, the push rod 101 compresses the return spring 102 and pushes the return spring 102 to move linearly along the direction of movement against the unlocking paddle 303, causing the unlocking paddle 303 to insert into the locking hole of the wrench head 2. The locking ball on the spring locking pin 301 extends, realizing the locking connection between the handle assembly 1 and the wrench head 2. At this time, the operator can rotate the handle assembly 1 to drive the wrench head 2 and the ball valve cylinder transmission rod to rotate, thereby assisting in opening the ball valve. During the rotation process, if it is necessary to repeatedly apply force in the same direction, it can be achieved by relying on the wrench's own structure without repositioning the wrench.

[0029] When the wrench is used in the wrong direction, the push rod 101 cannot effectively push the return spring 102 to insert the unlocking paddle 303 into the locking hole of the wrench head 2, so it cannot apply an auxiliary opening torque to the cylinder, thus avoiding the situation where the wrench gets stuck on the ball valve cylinder bracket due to the wrong wrench direction.

[0030] When the ball valve cylinder suddenly opens by itself, the force transmission rod drives the wrench head 2 to rotate. At this time, since the relative movement direction between the push rod 101 and the wrench head 2 is opposite, the spring locking pin 301 cannot remain locked, thereby realizing the automatic unlocking of the handle assembly 1 and the wrench head 2. The wrench will not obstruct the rotation of the ball valve cylinder.

[0031] If an extreme situation occurs during emergency opening and the wrench gets stuck on the bracket, the operator can pull it out through the pin on the hinge piece 401 and the T-shaped locking block 403 to manually release the locking state between the handle assembly 1 and the wrench head 2, quickly separate the handle assembly 1 and the wrench head 2, and solve the wrench jamming problem.

Claims

1. A pneumatic ball valve emergency auxiliary wrench, comprising a handle assembly (1), a wrench head (2), a trigger assembly (4), and a connection locking assembly (3), characterized in that: The handle assembly (1) and the connection locking assembly (3) are movably connected through the connection trigger assembly (4), so that the handle assembly (1) can be quickly connected and separated from the wrench heads (2) of different specifications. A sliding member (5) is fixedly provided at the lower part of the wrench head (2). The lower side of the sliding member (5) is threadedly connected to the connection locking assembly (3). The connection locking assembly (3) includes a spring locking pin (301), a guide sleeve (302) and an unlocking paddle (303). The spring locking pin (301) is provided at the connection part of the handle assembly (1) and the trigger assembly (4). The handle assembly (1) includes a handle body and a thrust transmission mechanism disposed inside the handle body. The thrust transmission mechanism includes a push rod (101) and a return spring (102). One end of the push rod (101) is disposed inside one side of the handle assembly (1), and the other end can be inserted into the unlocking paddle (303) of the locking assembly (3). After the ball lock on the unlocking paddle (303) extends, the handle assembly (1) is locked to the wrench head (2). The outer surface of the guide sleeve (302) is fixedly installed inside the handle assembly (1) to guide the spring locking pin (301) and ensure its linear movement.

2. The pneumatic ball valve emergency auxiliary wrench according to claim 1, characterized in that: The handle body of the handle assembly (1) adopts an ergonomic design, which makes it easy for the operator to apply torque after gripping it. When the operator rotates it in the forward direction, the push rod (101) will apply force to the spring locking pin (301). The reset spring (102) is sleeved on the push rod (101) and is used to reset the push rod (101) after the push force is removed.

3. The pneumatic ball valve emergency auxiliary wrench according to claim 1, characterized in that: The trigger assembly (4) includes a hinge plate (401), a slot structure (402), and a T-shaped locking block (403). The hinge plate (401) is hinged to the side of the handle assembly (1). The other side of the hinge plate (401) is fixedly installed between the handle assembly (1) and the wrench head (2) by a pivot pin. The T-shaped locking block (403) is inserted into the slot structure (402) to fix the handle assembly (1) and the wrench head (2) together.

4. The pneumatic ball valve emergency auxiliary wrench according to claim 1, characterized in that: The wrench head (2) is internally connected to a roller (6), one end of which is fixedly connected to a locking assembly (3).

5. The pneumatic ball valve emergency auxiliary wrench according to claim 1, characterized in that: A limiting bracket (7) is fixedly provided on the outer side of the unlocking lever (303), and one side of the limiting bracket (7) is engaged with one side of the connecting locking component (3).

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